Standard design: professional workmanship, high precision and stable work
S8182 M54*0.75
The Extension Ring has length of 4mm,5mm,6mm,7mm,8mm,9mm.
Outer diameter: 60mm
male thread length: 3mm
4mm-female thread length is 3mm
5mm-female thread length is 4mm
6mm-female thread length is 4.5mm
7mm-female thread length is 5.5mm
8mm-female thread length is 6mm
9mm-female thread length is 7mm